Whether or not a child is in need of calcium supplements is determined by whether or not they have a calcium deficiency. Children with calcium deficiency need to take vitamin D or even calcium supplements under the guidance of a doctor; if their calcium levels are normal, they do not need to take calcium tablets. Children’s daily intake of food, milk, eggs are generally enough to meet the calcium needs of their growth and development, generally less likely to have symptoms of calcium deficiency, but if it is in the process of growth and development of picky eaters, anorexia, etc., may lead to calcium deficiency. It is recommended that the child be seen in a hospital in time to determine if there is a calcium deficiency. If the child has a calcium deficiency, vitamin D or even calcium supplements, such as calcium gluconate, should be taken under the guidance of a doctor; if the calcium level is normal, there is no need to take calcium tablets. Children need to eat a balanced diet with adequate calcium-rich foods such as milk, eggs, meat, etc., as well as moderate exposure to sunlight to promote calcium absorption. All of the above medications should be used under medical supervision.